Patents by Inventor Kurt D. Zirbel

Kurt D. Zirbel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5588570
    Abstract: A combination backpack and seat device is provided which includes a frame separable into two members. The first member generally supports the backpack of the present invention and also provides a back rest for a seated user. The second member stores easily within the pouch of the backpack and can be attached to form an L-shaped structure. Once the second member of the frame is connected to the first member, a cushion can be lowered to form a low profile seat which can be used for sitting. The present invention allows for comfort and ease in assembly, as well as a lightweight unit which can be easily transported.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: December 31, 1996
    Inventor: Kurt D. Zirbel